Reconfiguring can break x264 lossless encoding.

Fixes ticket #2165.

Since lavfi works natively with AVFrame now, these functions are no longer
necessary and can be removed in a future bump.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  af_join: do not leak input frames.
  asrc_anullsrc: return EOF, not -1

Conflicts:
	libavfilter/asrc_anullsrc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f4281f45':
  asrc_anullsrc: do not set samplerate and channel layout explicitly

Conflicts:
	libavfilter/asrc_anullsrc.c

No change to FFmpeg due to semantic difference between the filter sources
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e4a7b217':
  vf_showinfo: remove its useless init function
  AVOptions: fix using named constants with child contexts.

Conflicts:
	libavutil/opt.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9676b9a2':
  AVOption: remove an unused function parameter.
  filters.texi: restore mistakenly removed section name for noformat
  avfiltergraph: use sizeof(var) instead of sizeof(type)
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '42c7c61a':
  avfiltergraph: replace AVFilterGraph.filter_count with nb_filters

Conflicts:
	doc/APIchanges
	libavfilter/avfiltergraph.c
	libavfilter/avfiltergraph.h
	libavfilter/graphparser.c
	libavfilter/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '556aab8f':
  lavfi: use designated initializers in avfilter_class

Conflicts:
	libavfilter/avfilter.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'aa3c7799':
  lavf: sanity check size in av_get/append_packet().

Conflicts:
	libavformat/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ca6c3f2c':
  lzo: fix overflow checking in copy_backptr()
  flacdec: simplify bounds checking in flac_probe()
  atrac3: avoid oversized shifting in decode_bytes()

Conflicts:
	libavformat/flacdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This is admittedly kind of pointless since usually -f image2pipe
can be used for the purpose, but this is more user-friendly.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Otherwise ffmpeg -formats claims that we only support demuxing
of that format.
To keep compatibility the struct could be duplicated instead,
but this seems almost like overkill for such a rare format.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

- Make MultiByteToWideChar fail when it encounters invalid encoding.
  Without this, invalid characters might just be skipped
- When MultiByteToWideChar fails, assume the file name is in CP_ACP
  and open it via normal open function, even when the file will be
  written
- When malloc fails return error instead of crashing
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

They are auto-negotiated.

Filter private data is memset to 0 so there is no point in explicitly
initing anything to 0.

The named constant needs to be searched for in the same object on which
the option is set, i.e. target_obj.

This is more consistent with the naming in the rest of Libav.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fix a memory leak because the compat implementation of
AV_BUFFERSINK_FLAG_PEEK is not identical to the previous one.

To avoid allocating ridiculous amounts of memory for corrupted files,
read the input in chunks limited to filesize or an arbitrary large
amount when that is not known (chosen to be 50M).

Signed-off-by: Paul B Mahol <onemda@gmail.com>

The C code treats the data as arrays of uint16_t so strides must not
be in bytes but in pixels.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: wm4
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: wm4
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>